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From: Jim Janney <jjanney@shell.xmission.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: How convert Iterator into Enumeration
Date: Wed, 28 Nov 2012 14:01:21 -0700
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Roedy Green <see_website@mindprod.com.invalid> writes:

> On Wed, 28 Nov 2012 11:11:47 -0700, Jim Janney
> <jjanney@shell.xmission.com> wrote, quoted or indirectly quoted
> someone who said :
>
>>enumeration method in java.util.Collections.
>
> Are you referring to?
> static <T> Enumeration<T> enumeration(Collection<T> c)
>
> I don't see one that takes an Iterator.

Yes, and yes.  Not as general as adapting an Iterator, but good enough
for the problem as originally described, which was to produce an
Enumeration from a HashMap.  Assuming that parametermap is declared as

    Map<String, Object> parametermap;

you can write

    /**
     * <p>Retrieve the parameter names.</p>
     *
     * @return The names.
     */
    public Enumeration<String> getParameterNames() {
        return java.util.Collections.enumeration(parametermap.keyset());
    }

-- 
Jim Janney